Influence of carbides on the strength and toughness of a niobium alloy

Rengen Ding; Ian Jones

doi:10.1179/174328409X408884

Influence of carbides on the strength and toughness of a niobium alloy

Rengen Ding
, Ian Jones

Metallurgy and Materials

Research output: Contribution to journal › Article

9 Citations (Scopus)

Abstract

The mechanical behaviour of Nb35Ti6Al5Cr8V (at.-%) containing different C contents (0, 1 and 10 at.-%) has been investigated. The addition of 1 at.-% C does not increase the strength at room or high temperature, whereas adding 10 at.-% C improves significantly the strength at both room and high temperature. Adding 1 at.-% C slightly increases the fracture toughness; aging the same alloy for 9 days also results in a slight improvement in the toughness. A 10 at.-% C addition, however, leads to a dramatic decrease in the toughness. The variation in the toughness is linearly related to the proportion of cleavage as modified by the carbide.

Original language	English
Pages (from-to)	323-332
Number of pages	10
Journal	Materials Science and Technology
Volume	26
Issue number	3
DOIs	https://doi.org/10.1179/174328409X408884
Publication status	Published - 1 Mar 2010

Keywords

Strength
Carbon
Nb-Ti-Al alloy
Fracture toughness

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10.1179/174328409X408884

Structural Metallic Systems For Advanced Gas Turbine Applications
Bowen, P. (Principal Investigator), Chiu, Y.-L. (Co-Investigator) & Reed, R. (Co-Investigator)
Engineering & Physical Science Research Council
1/10/09 → 30/09/14
Project: Research Councils

Cite this

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title = "Influence of carbides on the strength and toughness of a niobium alloy",

abstract = "The mechanical behaviour of Nb35Ti6Al5Cr8V (at.-\%) containing different C contents (0, 1 and 10 at.-\%) has been investigated. The addition of 1 at.-\% C does not increase the strength at room or high temperature, whereas adding 10 at.-\% C improves significantly the strength at both room and high temperature. Adding 1 at.-\% C slightly increases the fracture toughness; aging the same alloy for 9 days also results in a slight improvement in the toughness. A 10 at.-\% C addition, however, leads to a dramatic decrease in the toughness. The variation in the toughness is linearly related to the proportion of cleavage as modified by the carbide.",

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AU - Jones, Ian

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N2 - The mechanical behaviour of Nb35Ti6Al5Cr8V (at.-%) containing different C contents (0, 1 and 10 at.-%) has been investigated. The addition of 1 at.-% C does not increase the strength at room or high temperature, whereas adding 10 at.-% C improves significantly the strength at both room and high temperature. Adding 1 at.-% C slightly increases the fracture toughness; aging the same alloy for 9 days also results in a slight improvement in the toughness. A 10 at.-% C addition, however, leads to a dramatic decrease in the toughness. The variation in the toughness is linearly related to the proportion of cleavage as modified by the carbide.

AB - The mechanical behaviour of Nb35Ti6Al5Cr8V (at.-%) containing different C contents (0, 1 and 10 at.-%) has been investigated. The addition of 1 at.-% C does not increase the strength at room or high temperature, whereas adding 10 at.-% C improves significantly the strength at both room and high temperature. Adding 1 at.-% C slightly increases the fracture toughness; aging the same alloy for 9 days also results in a slight improvement in the toughness. A 10 at.-% C addition, however, leads to a dramatic decrease in the toughness. The variation in the toughness is linearly related to the proportion of cleavage as modified by the carbide.

KW - Strength

KW - Carbon

KW - Nb-Ti-Al alloy

KW - Fracture toughness

U2 - 10.1179/174328409X408884

DO - 10.1179/174328409X408884

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SP - 323

EP - 332

JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 3

ER -

Influence of carbides on the strength and toughness of a niobium alloy

Abstract

Keywords

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Structural Metallic Systems For Advanced Gas Turbine Applications

Cite this